refactor: 训练模块整体迁入分包,减小主包体积

主包超出 2MB 上限无法上传发布版,把训练相关全部移到独立分包。

目录调整:
- pages/training/* → training/pages/*
- hooks/use{Metronome,VoiceCoach,TrainingSession,TrainingBgm}.ts
  → training/hooks/*
- static/training/* → training/static/*
- 主包 hooks/ 目录已清空,所有 use* 都被分包独占

引用路径更新:
- 分包内 hook import 用相对路径 ../hooks/xxx,不依赖 @/ alias
- 资源路径 /static/training/audio/click.mp3
  → /training/static/audio/click.mp3
- useMetronome 默认 clickSrc / useVoiceCoach VOICE_BASE
  / useTrainingBgm BGM_BASE 全部对齐新路径

pages.json:
- 主包 pages 移除 training/index 和 training/metronome
- subPackages 新增 root="training",含 pages/index 和 pages/metronome
- 跟现有 TUIKit / doctor 分包风格一致

调用方:
- components/dev-training-entry navigateTo URL 更新成
  /training/pages/metronome (此组件留在主包,主包跳分包是合法操作)

文档/工具同步:
- training/static/README.md 路径示例改为 training/static/...
- scripts/generate-voice.mjs VOICE_DIR 与提示输出对齐新路径

Git mv 检测到的全是 rename(R),历史完整保留。
分包总体 80K(pages 44K + hooks 20K + static 16K),主包瘦身明显。

Co-authored-by: Cursor <cursoragent@cursor.com>

TUICallKit-Vue3/training/hooks/useVoiceCoach.ts

@@ -0,0 +1,87 @@
+import { onUnmounted } from 'vue'
+
+const VOICE_BASE = '/training/static/voice'
+
+export type VoicePromptKey =
+    | 'start'
+    | 'ready'
+    | 'rest'
+    | 'next-set'
+    | 'last-rep'
+    | 'keep-it-up'
+    | 'good-job'
+    | 'breathe-in'
+    | 'breathe-out'
+
+export interface UseVoiceCoachOptions {
+    enabled?: boolean
+    volume?: number
+}
+
+export function useVoiceCoach(options: UseVoiceCoachOptions = {}) {
+    const { enabled = true, volume = 1 } = options
+
+    let ctx: UniApp.InnerAudioContext | null = null
+    let queue: string[] = []
+    let isPlayingQueue = false
+
+    const ensureCtx = () => {
+        if (ctx) return
+        ctx = uni.createInnerAudioContext()
+        ctx.volume = volume
+        ctx.obeyMuteSwitch = false
+        ctx.onEnded(() => {
+            playNextInQueue()
+        })
+        ctx.onError(() => {
+            playNextInQueue()
+        })
+    }
+
+    const playNextInQueue = () => {
+        if (!ctx || queue.length === 0) {
+            isPlayingQueue = false
+            return
+        }
+        const nextSrc = queue.shift()!
+        ctx.src = nextSrc
+        ctx.play()
+    }
+
+    const enqueue = (src: string) => {
+        if (!enabled) return
+        ensureCtx()
+        queue.push(src)
+        if (!isPlayingQueue) {
+            isPlayingQueue = true
+            playNextInQueue()
+        }
+    }
+
+    const speakNumber = (n: number) => {
+        if (n < 1 || n > 30) return
+        enqueue(`${VOICE_BASE}/numbers/${n}.mp3`)
+    }
+
+    const speakPrompt = (key: VoicePromptKey) => {
+        enqueue(`${VOICE_BASE}/prompts/${key}.mp3`)
+    }
+
+    const stop = () => {
+        queue = []
+        isPlayingQueue = false
+        ctx?.stop()
+    }
+
+    onUnmounted(() => {
+        stop()
+        ctx?.destroy?.()
+        ctx = null
+    })
+
+    return {
+        speakNumber,
+        speakPrompt,
+        stop,
+    }
+}